Corona Renderer Forum

Corona Renderer for Cinema 4D => Bug Reporting Cinema 4D => Topic started by: edub on 2019-05-30, 23:39:08

Title: C4D shader: effects > variation doesn't work in bump, displacement
Post by: edub on 2019-05-30, 23:39:08
I want to use the c4d variation shader to vary the UVW coordinates for polygon faces.
The variation shader works as expected, when used in the diffuse channel, but when applied in the bump or displacement channel it has no effect (I tested in standard c4d material, and it works there).
Title: Re: C4D shader: effects > variation doesn't work in bump, displacement
Post by: edub on 2019-06-11, 20:31:39
will this be addressed in an upcoming fix?
Title: Re: C4D shader: effects > variation doesn't work in bump, displacement
Post by: edub on 2019-06-15, 01:07:14
BTW - variation shader doesn't work in specular channel either ;(
Title: Re: C4D shader: effects > variation doesn't work in bump, displacement
Post by: houska on 2019-06-19, 20:43:25
BTW - variation shader doesn't work in specular channel either ;(

I am sorry, but did you really mean specular channel? We only have reflection channel in Corona material and it does work there for me...

As for the variation shader in the bump channel, it is unfortunately super hard to make it work due to the technical limitations. :-( But if you check it in C4D, it's not possible there either.

Displacement channel works for me. The only place where it does not work is a render perfect sphere, which only has "one polygon" in C4D, so no polygon variation can happen there in Corona either if we want to stay consistent with C4D.